This thesis addresses two problems of trust: 1. Knowledge on Trust: If we are provided with information by a variety of individuals, whom we trust to different degrees, what is the best overall theory we can form from the information we are given? 2. Social Trust: If one does not have direct experience of an individual, how can one establish an initial degree of trust through the offices of soc...

Securing ad hoc networks in a fully self-organized way is effective and light-weight, but fails to accomplish trust initialization in many trust deficient scenarios. To overcome this problem, this paper aims at building well established trust relationships in ad hoc networks without relying on any pre-defined assumption. We propose a probabilistic solution based on distributed trust model. A se...

The purpose of this study is to assess the possibility of implementing an online advertising strategy using a well-known third-party privacy seal located on the order page of an unfamiliar online retailer. An online experiment was conducted with 223 participants using a 2 (third-party seal: present vs. absent)×2 (purchase-decision involvement: low vs. high)×2 (disposition to trust: low vs. high...

Diffusion occurs in various contexts and generally involves a network of entities and interactions between entities. Through these interactions, some property, e.g. information, ideas, etc., is spread through the network. This paper presents a general model of diffusion in dynamic networks. We simulate the diffusion of evacuation warnings in multiple network structures under various model setti...

Information technology has transformed how travelers interact with travel service providers. Due to fierce competition in the online air travel industry, e-ticketing services have focused attention on fostering customer loyalty. This is an important strategy because, in general, initial transactions with new customers are less profitable than transactions with existing customers. Drawing on res...

Access control in distributed systems has been an area of intense research in recent years. One promising approach has been that of trust management, whereby authentication and authorization decisions are combined in a unified framework for evaluating security policies and credentials. In this paper, we report on our experience of the past seven years using the PolicyMaker and the KeyNote trust...

In recent decades, Europe has experienced a major societal challenge—the aging of the human population. The Finnish government responded to this challenge by focusing on individually tailored services that enable older adults live independently and comfortably at home for longer with help digital assistive technology. This paper presents findings an empirical study how initial trust is formed r...

Online Social Network (OSN) has become the most popular platform on the Internet that can provide an interesting and creative ways to communicate, sharing and meets with peoples. As OSNs mature, issues regarding proper use of OSNs are also growing. In this research, the challenges of online social networks have been investigated. The current issues in some of the Social Network Sites are being ...

Chinese C2C market grows rapidly. However, it is plagued by serious trust fraud problems. The level of price dispersion in C2C platforms is relatively high. The mixed interaction between “lemons market” problem and high level of price dispersion makes it hard for buyers to identify trustworthy sellers with low price. We are interested in the generation of initial trust and purchase intention wh...